Prevent backups while on Wi-Fi?

Is there a way to prevent backups when the client is connected via Wi-Fi? If not does anyone have a suggestion on how to stop the UrBackup service when wireless and start it when connected via Ethernet cable?

-Thanks for any input.

Take a look at NetSetMan ( http://www.netsetman.com/de/freeware ).

With this pice of software you can launch scripts depending on your actual network config/environment.

Greets
Marco